BroadSoft and Sonus Partner to Integrate Capabilities

BroadSoft, Inc. (NASDAQ: BSFT) and Sonus Networks, Inc. (NASDAQ: SONS)
today announced they are partnering to ensure full interoperability of
BroadSoft’s BroadWorks®, BroadCloud™ and BroadTouch™ product
offerings and the Sonus line of session border controllers (SBCs) for
telecommunications service providers, designed to accelerate their
deployment of hosted, cloud-based, communication services.

Unified Communications services are increasingly important to service
providers:

The market for Collaboration Services delivered via cloud deployments
is projected to be $22B by 2018. (Source: Forrester, Collaboration
Services: Deployment Options For The Enterprise, November 2012)

A February 2013 survey found that, while over half of all Unified
Communication deployments are premises-based today, that percentage is
expected to drop to 31% as future deployments move more to the cloud.
(Webtorials Enterprise Survey)

Sonus and BroadSoft can provide simplified network designs to reduce
costs by leveraging BroadSoft’s products and the Sonus line of SBCs.
Service providers can also use these BroadSoft and Sonus offerings to
define and take to market a broad range of Unified Communications
services including voice, video calling and conferencing, web
conferencing, instant messaging and presence.

“BroadSoft and Sonus share a commitment to our global telecommunications
service provider customers of providing seamlessly integrated network
components,” said Michael Tessler, president and CEO of BroadSoft. “By
partnering with Sonus to fully test pre-integrated solutions, we believe
we are simplifying the network support of our customers’ Unified
Communications solutions.”

“BroadSoft is a well-established leader in helping service providers
create and monetize new services and capabilities,” said Ray Dolan,
president and CEO of Sonus. “Together, Sonus and BroadSoft products
offer a pathway for service providers to leverage their investments as
they seek to add new features and capabilities in a manner that is easy
to use, simple to manage and affordable to deploy.”

“The interoperability of BroadSoft products with Sonus’ SBCs can help
customers accelerate SIP application delivery,” said Diane Myers,
Principal Analyst with Infonetics Research. “In a market where speed of
deployment and time to revenue are critical success factors, service
providers are seeking reliable, integrated solutions that deliver both
cost savings and new revenue opportunities through cloud-based unified
communications.”

Sonus and BroadSoft are currently working together in test labs and
customer engagements.

Sonus helps the world's leading communications service providers and
enterprises embrace the next generation of SIP-based solutions including
VoIP, video and Unified Communications through secure, reliable and
scalable IP networks. With customers around the globe and 15 years of
experience transforming networks to IP, Sonus has enabled service
providers and enterprises to capture and retain users and generate
significant ROI. Sonus products include session border controllers,
policy/routing servers, subscriber feature servers and media and
signaling gateways. Sonus products are supported by a global services
team with experience in design, deployment and maintenance of some of
the world's largest and most complex IP networks. For more information,
visit www.sonus.net
or call 1-855-GO-SONUS.

Important Information Regarding Forward-Looking Statements (Sonus):

The information in this release may contain certain forward-looking
statements within the meaning of the U.S. Private Securities Litigation
Reform Act of 1995 regarding future events that involve risks and
uncertainties. Although Sonus believes that its expectations are based
on reasonable assumptions, readers are cautioned that these
forward-looking statements are only predictions and are subject to
inherent uncertainties, risks and changes in circumstances that are
difficult to predict. All statements other than statements of historical
facts contained in this report are forward-looking statements. Our
actual results may differ materially from those contemplated by the
forward-looking statements. For further information regarding risks and
uncertainties associated with Sonus’ business, please refer to the
“Management’s Discussion and Analysis of Financial Condition and Results
of Operations” and “Risk Factors” sections of Sonus’ filings with the
Securities and Exchange Commission. Any forward-looking statements
represent Sonus' views only as of the date on which such statement is
made, and should not be relied upon as representing Sonus' views as of
any subsequent date. While Sonus may elect to update forward-looking
statements at some point, Sonus specifically disclaims any obligation to
do so, except as required by law.

About BroadSoft:

BroadSoft is the leading provider of software and services that enable
mobile, fixed-line and cable service providers to offer Unified
Communications over their Internet Protocol network. The Company's core
communications platform enables the delivery of a range of enterprise
and consumer calling, messaging and collaboration communication
services, including private branch exchanges, video calling, text
messaging and converged mobile and fixed-line services.

Forward-Looking Statements (BroadSoft):

This press release may contain forward-looking statements within the
meaning of the Private Securities Litigation Reform Act of 1995. These
forward-looking statements may be identified by their use of terms and
phrases such as “believe,” "can," "enable," "will," “expect” and other
similar terms and phrases, and such forward-looking statements include,
but are not limited to, the statements regarding the capabilities and
benefits to service providers, enterprises and end users of the
interoperability of BroadSoft products and Sonus SBCs. The outcome of
the events described in these forward-looking statements is subject to
known and unknown risks, uncertainties and other factors that could
cause actual results to differ materially from the results anticipated
by these forward-looking statements, including, but not limited to
whether these integrated solutions will be utilized by BroadSoft's
customers and the resulting financial and other benefits to BroadSoft,
as well as those factors contained in the "Risk Factors" sections of the
Company's Form 10-Q for the quarter ended June 30, 2012 filed with the
Securities and Exchange Commission, or SEC, on August 6, 2012 and the
Company's Form 10-K for the year ended December 31, 2011 filed with the
SEC on February 29, 2012, and in the Company's other filings with the
SEC. All information in this release is as of February 7, 2013. Except
as required by law, BroadSoft undertakes no obligation to update
publicly any forward-looking statement made herein for any reason to
conform the statement to actual results or changes in its expectations.